#include <iostream>
using std::cout;
using std::endl;

/* int num = 100; */

/* void print(){ */
/* cout << "print()" << endl; */
/* } */

int val = 100;

void display(){
    cout << "display()" << endl;
}

namespace wd
{
int val = 300;

void display(){
    cout << "wd::display()" << endl;
}
}//end of namespace wd
